Product Description Slide-Co 13182 Sliding Glass Door Roller Assembly 1-1/4” steel ball bearing roller. Adjustable steel housing assembly. Housing Dimensions: Thickness 11/16", Length 2-5/16", Height 1-3/16" With An Overall Thickness Of 7/8". From the Manufacturer Slide-Co 13182 Sliding Glass Door Roller Assembly 1-1/4” steel ball bearing roller. Adjustable steel housing assembly. Housing Dimensions: Thickness 11/16", Length 2-5/16", Height 1-3/16" With An Overall Thickness Of 7/8".